As Paul Harvy says.."here's the rest of the story..." My J/30 s/n 085 has been undergoing a MAJOR 20 year restoration. Bow-to-stern. Everything has been remove from the boat and either repaired upgraded or replaced. Mast, boom, pole, running/standing rigging, all fittings inspected, thru holes epoxied to prevent water intrusion into the core. Engine sent to/from Mack Boring and brought back to new. Neew North Sails. All interior wood removed repair/replaced as like new, epoxied/varnished interior painted then returned. Hatches upgraded. Next came the side ports. In discussions with Henry at Layline, the Lewmar Ocean Portlight size 4 were selected. They were a near fit and only required minimal material removal to fit. The original hull has an angled opening and these are right angles. Four portlights were purchased from Henery at Layline. My wife as very happy with this as cross ventilation is a major concern. While crewing last Summer 2000, I mentioned with delight of this new improvement to my J/30. The Chesapeak fleet measurer happened to be on board that Wednesday...."you can't do that! you have to modify the hull for those to fit and the regs stipulate NO modifications unless authorized!" At the Spring 2001 Ches-bay Fleet meeting I brought the subject up again and was publicly told NO again. I've since return them to Henry and he gladly refunded 100%. Thats the story.